$140(.075) = 10.5
10.5+140= 150.50
the total would be $150.50
The amount if the original cost of the head board is $12.24
I'm not sure which numbers you are referring to, but 3 has the same absolute value as -3, and 7 has the same absolute value as -7, just for an example.
The formula of the volume of the rectangular prism:
V = length × width × height
We have: